Message registering camera



Feb. 24, 1959 A. H. GOREY MESSAGE REGISTERING CAMERA Filed Aug. 27, 19526 Sheets-Sheet 1 IN V EN TOR. ARCH/E H. GOREY izo LCL@

ATTORNEY Feb. 24, 1959 A. H. GoREY MESSAGE REGISTERING CAMERA 6Sheets-Sheet 2 Filed Aug. 27, 1952 INVENTOR. ARCH/E H. GORE Y A TTORNEYFeb- 24, 1959 A. H. GOREY 2,874,623

MESSAGE REGISTERING CAMERA Filed Aug. 27, 1952 6 Sheets-Sheet 3 INVENTOR. ARCH/E H GORE Y FG 6 A TTORNEY Feb. 24, 1959 A. H. GOREY MESSAGEREGISTERING CAMERA 6 Sheets-Sheet 4 Filed Aug. 27, 1952 JNVENTOR,ARCH/EH. GOREY A TTORNEY Feb. 24, 1959 AHGOREY MESSAGE REGISTERINGCAMERA 6 Sheets-Sheet 5 Flged Aug. 27, 1952 INVENTOR. v ARCH/E H. GOREY-Feb. 24, 1959 Filed Aug. 27, 1952 6 Sheets-Sheet 6 Q a Q5 N LA Q E ze N05 'c2 INVENTo ARCH/E H GEY A TTORNEY United States Patent O MESSAGEREGISTERING CAMERA Archie H. Gorey, Irondequoit, N. Y., assignor toGraflex, Inc., Rochester, N. Y., a corporation of Delaware ApplicationAugust 27, 1952, Serial No. 306,571

7 Claims. (Cl. 9511.5)

The present invention relates to photographic cameras, and moreparticularly to cameras for making photographic records of meter andlike readings.

Telephone companies are accustomed to meter the number of calls made bycustomers, particularly commercial telephone users, and to bill thosecustomers periodically from the meter readings. It has been found thaterrors occur when written records are made of meter readings. Errors maybe made in reading the meters, in recording the readings on a reportsheet, and in transcribing the readings of the report sheet to themonthly bill. Moreover, if an error is made in recording the reading,there is no method of checking this error, because after the recordingthe meter is either reset, or will have recorded additional calls. Forthese reasons special cameras have been developed to photograph meterreadings. The photographs avoid any possibility of error in recordingthe readings. They provide, moreover, a permanent record of the readingsfor as long a periodras desired, so that should an error be made intranscribing therrecord to a bill, the actual reading can quickly bechecked from the photograph.

The primary purpose of the present invention is to provide a camera forrecording meter readings which is simpler and more compact inconstruction, lighter, and easier to handle than conventional types ofsuch cameras.

Another object ofthe invention is toV provide a camera of the typedescribed in which the operation of the shutter will be properly anddefinitely synchronized with :the winding or feeding of the film and inwhich successive exposures may be made with great rapidity `one afteranother.

Another object of the invention is to provide a camera of the characterdescribed in which a flash lamp may lbe employed and in which theoperation of the shutter is synchronized with the operation of the flashlamp.

.Another object of the invention is to provide a simple and efficientshutter mechanism for a camera of the class described that will bepositive in its operation and will stand hard usage.

A further object of the invention is to provide a carnera of the typedescribed equipped for electrical operation in such a manner as to bemore efficient.

Other objects of the invention are Ato provide a camera in which themanual effort required in operation is reduced to a minimum, to providea camera in which loading and unloading of the film is simplified, andto provide a camera in which the advance of the film from one exposurearea to another is precisely metered to avoid waste of film.

Still other objects of the invention will be apparent hereinafter fromthe specification when read in the light ofthe accompanying drawings,and from the recital of the appended claims.

In the drawings:

Fig. 1 is a plan view of a camera built according to one embodiment ofthis invention, parts of the .hood and 2,874,623 Patented Feb. 24, 19x59ice ythat are to be photographed;

Fig. 3 is a front elevation of the camera, 'but omitting the trigger,gripping handles and other parts back ofthe center section of thecamera;

Fig. 4 is a front elevation of :the camera with the hood removed;

Fig. Slis a rear view of the camera with the covering hood removed;

Fig. 6 is a section on the line 6 6 of Fig. 5 looking in the directionof the arrows;

Fig. 7 is a section on the line 7--7 of Fig. 5, looking in the directionof the arrows;

Fig. 8'is a fragmentary section on an enlarged scale taken in the planeof the line 8-8 of Fig. 9 looking in the direction of the arrows, andshowing the lens mounting, the means for affecting focusing adjustmentthereof, the shutterr and its mounting, and the inner housing whichcarries the glass over the rear face of which the film travels;

Fig. 9 is a rear view of the inner housing and of the parts mountedthereon, the view being taken with the ground glass removed;

Fig. 10 is a fragmentary view of parts of the triggering mechanism shownat the left in Fig. 4, and taken on the line 10-10 of Fig. 6, looking inthe direction of the arrows, and showing the trigger at `the end of itstriggering movement;

Fig. 11 is an axial sectional view of the take-up cassette on agreatly-enlarged scale taken on the line 11-11 of Fig. 6; and

Fig. 12 is an electrical wiring diagram of the camera.

The camera illustrated has a film-winding mechanism that is electricallyoperated. It carries its own illumination so as to properly illuminatethe meter dials. It may be connected to a portable power pack which, inturn, may be connected by a flexible cord with any convenient electricalcircuit to enable the operator of the camera to move the same .from onegroup of meters to another group throughout an entire telephoneexchange. ln using the camera the operator simply holds the camera to agroup of meters and presses a trigger. This actuates a member whichoperates first to open the camera shutter and to actuate the camerasflashlarnps in proper synchronism with the opening of the shutter andwhich then permits the shutter to close, so that a proper exposure ismade on one picture area of the camera nlm. Then this member actuates amotor to cause the film to be automatically Wound to the extent of oneexposure area, whereby the picture previously taken is wound up on thetake-up roll and a new picture area is presented in the field ofexposure. The winding of the film occurs very .rapidly and is ordinarilyaccomplished while the camera is being moved from one group of meters toanother.

The camera comprises three principal sections disposed one behind theother, namely, a hood 20, a center section 21 (Figs. l and 2) whichhouses the flash lamps, and

' a rear section 22 which supports the operating mechanism The hood A20is rectangular in cross-section. It is adapted to be 'set close againstand surround a group of "meter Vdials or registers or other objects tobe photographed. To improve the picture, four reector plates are rivetedalong the four sides of the hood 20 vat the so that their inclination toa horiozntal plane can be adjusted.V The lower plate 38 is riveted alongits front edge by rivets 40 to the hood so that its front edge isushwith the front lower edge of the hood. It has adjusting Vjack screws 41threaded in it 'adjacent its rear edge that engage with the inside lowersurface of the hood to adjust theangle of inclination or tilt of thereflector with reference 4to a horizontal plane. The upper plate 37 ismounted to protrude a slight distance beyond the hood and is riveted tothe hood back of its front edge by rivets 42. It has jack screws 43threaded into it adjacent its rear edge that engage the inside uppersurface of the hood and that permit variation of its tilt to thehorizontal plane. The side plate 35 is secured with its front edge ilushwith the left front edge of the hood. The side plate 36 is secured'toprotrude a slight distance beyond the hood, just like the plate 37. Bymaking one vertical side plate and one horizontal plate flush with thefront face of the hood, and the other two plates 36 and 37 protruding,it is possible to quickly fit the hood over a group of meters that areto be photographed, and to quickly remove the camera therefrom and shiftit to another position.

The hood has a rectangular aperture 50 (Fig. 2) in its rear wall 51.This registers with a rectangular aperture 52 in the front wall 53 ofthe center section 21. The hood 20 is secured to the intermediatesection 21 by bolts 55 that pass through the abutting walls 51 and 53 ofthe two sections.

Mounted adjacent the front of the center section 21 Vis a ash lampassembly denoted generally at 60. This assembly which protrudes atopposite sides beyond the adjacent sides of the center section, see Fig.1, is secured to the center section 21 by screws 61. It carries at topand bottom two parallel tubular gaseous type ash lamps 62, 62.Reflectors 63 are provided behind these lamps to direct the illuminationof the lamps at the meters or other objects to be photographed. Thereectors are secured in the center section 21 by screws 64.

The lens 70 (Figs. 4 and 8) of the camera, which may be of conventionaltype, is threaded into a ringV or mount 72 whichis mounted to slidereciprocably in a cylindrical guide 73 formed integral with andprojecting forwardly from the front wall of the housing 30. This guide73 is externally threaded on its periphery. The lens is adapted to beadjusted forward or backward for focusing by rotation of a pair of rings75 (Figs. 6 and 8) which thread on the guide 73 and which are disposedat opposite sides of and engage diametrically opposed pins 76 that arexed in the ring 72. Diametrically opposed, axially extending slots 77are provided in the guide 73 to permit travel of the pins 76 forward andbackward as the lens is adjusted in focusing.

vA cover plate 80 (Figs. 8 and 9) is secured in the mounting member 72behind the lens 70 by screws 81. This cover plate has an aperture 82extending therethrough aligned axially with the lens.

Mounted between the cover plate 80 and the partition wall 83 of themember 72 is the shutter 85. The shutter 85 consists simply of an arm orblade of thin, flat sheet metal that is swaged on a sleeve 86 which isjournaled on stud or shaft 87. Stud or shaft 87 is ixedly secured inpartition wall 83. The sleeve 86 has a collar 88 secured to it at itsrear end by a set-screw V89, The shutter is adapted to be rocked in onedirection lto open itby pin 91 that is secured in the collar 88. Theshutter is returned to closed position, and constantly urged toward thatposition by means of a coil spring 92 that is engaged at one end over apin 93 which is secured in the shutter, and that is engaged at its otherend over a pin 94 that is fastened in the plate 80.

Secured to the transverse wall of the housing by screws 96 (Figs. 4 and9) is an inner housing 100. Mounted in the rear wall of this innerhousing is a. mask plate 101 which has a rectangular aperturetherethrough. Seated against a rectangularly-apertured gasket 102, thatrests against mask 101, is a glass 103. The glass is held in position byclamps 104. The rear face 107 of the glass constitutes the focal planeof the camera. The sensitized lm travels from the supply roll to thetake-up roll over the rear face 107 of the glass. It is held by springclips 105 against surface 107. Both the clamps 104 and spring clips 105are secured to housing 100 by screws 106.

The iilm is supplied from a cassette 110 (Figs. 5 and 6) travelingaround an idler roller 111, over a roller 112 (Figs. 4 and 5), whosefunction will be described further hereinafter, across the surface 107of the glass 103, around a measuring or metering roller 113 and into thetake-up cassette 115.

The two cassettes 110 and 115 may be identical in construction and maybe constructed as shown in the Steiner U. S. patent application SerialNo. 227,131, filed May meansof a cable which has one end looped over a75 19, 1951, now Patent No. 2,702,673. Each may comprise a body portion116 (Fig. 11) having an opening at one side through which the film maybe let into or let out of the cassette, and end caps 117. Each comprisesa core 118 which is open at both ends and which is adapted to beconnected to a driving pulley 120 at its lower end by face couplingteeth 121. Mounted in each core 118 is a cylindrical magnet 123, whichis interposed between two brass spacers 124 and 125. The lower spacer125 rests upon a headed brass pin 126 which is mounted in a recess 127in the pulley 120. The core 118 is formed on its periphery with a lug ordog 128.

The cassettes are `adapted to be used with lm of the type described inthe Steiner application referred to above, which has a metallic stripsecured to its lead edge, and a rectangular opening or slot directlybehind this strip. The metallic strip is adapted to be attracted to thecore by the magnet 123; and, as the core is rotated, the lug 128 on thecore engages in the slot behind the lead strip of the lm and causes theiilm to be wound upon the core. The advantage of this type lm andcartridge construction is, as pointed out in the Steiner application,that the lead end of the lm can be fed in blindly into the cassette andnevertheless the film will be properly wrapped on the core.

The drive pulley 120 is integral with a shaft 129 that is journaled in abushing 130 in the housing 30. The pulley 120 is adapted to be driven bypower from a motor (Figs. 4, 5 and 7) which drives through a standardgear reduction a vertical shaft 136 (Figs. 4, 5 and 7) to which issecured a pulley 137 (Figs. 5 and 7) that is provided with twoV-grooves.A belt 138 connects one of these grooves with the pulley 120 (Figs. 7and 11). A belt 139 connects the other groove with a pulley 140 (Figs. 5and 7) that is integral with or secured to the measuring roller 113.Thus, both the core ofthe take-up cassette and the measuring roller aredriven direct from the motor 135.

U-bolts 142 serve to guard the motor 135 from damage.

The core 118 of the take-up cassette is held connected to the pulley 120by a coil spring 145 (Fig. 11) which surrounds a plunger 146 that isengageable in the upper end of the core 118. The spring is interposedbetween against thefres'istanee ofthe 'springl `IIISftotdis'engage vitfrom the core, and to permit removalr of the cassette 115 from thehousing 30. n p

The cassette 110, as previously statedmay Vbe similar in construction totheca'ssette 115. Its clore 118 may be coupled, however, at its lowerend to a sleeve or shaft journaled in housing 30, instead of to a pulley120. At its upper 'end it may be held by a spring-presse`d plunger 149(Fig. 5) similar to plunger 149 (Fig. 11).

The measuring spoo1k113 has a stop-plate 155 (Fig. 6) keyed to it at itsupper end by a tongue and' groove connection which allows some play. Aspring 205 tends rto take up this play in the direction of rotation. The

stop-plate is engaged by one arm of a bell crank locking lever 156whichk is pivoted on the pin 157 mounted in housing 100. n jV n Themotor 135 is controlled by two vswitches 160` and 161 (Figs. 6 and 12).'Both of these switches must be :closed'inorder for the motor to start.`Both are normally open. The bell-crank 156 has alug 162 on one arm whichcarries a threaded, adjustable trip pin 163 that is intended 'to engagea strap spring 164 to trip switch 161. A switch 165 controls the ashlamps. This switch is also anormally open switch and is adapted to beoperated by a leaf `spring 166.

vAn operating shaft 170, which is slidable axially in bearings 171 and172 (Figs. 6 and 9) formed on housing 100, serves to operate the severalswitches ,160, 161 and v165, and to time their operation. This shaft hasa collar 173 integral with it that is adapted to engage the free end ofthe bell crank 156 and to rock the bell'crank about its axis 157 to tripswitch 161. A spring 174, which is coiled about the shaft 157 of thebell crank, and which is engaged at one end with the bell crank andy atits opposite `end with the housing 100, serves to hold the bell crankconstantly in engagement with the collar 173. A

lcollar '175 lon the' shaft 170 is adapted to engageleaf spring 166 inthe' rightward travel of shaft 170, and close switch 165. An adjustablestop screw 177, that threads "intotheleft'hand end ofthe rod 170, isadapted to engage a leaf spring 178, when the rod 170 is moved to theleft, to close' the. switch 160.

v The coil spring l180, which is coiled around the shaft 170 'and whichis interposed between bearing 172 and a collar 181 on the shaft,constantly urges the shaft to the left. The shaft is moved tothe rightby tripping of the trigger'185 of the camera. Y y

The triggeris rockably supported in a boss 186 formed on the side of thehousing 30. It carries a reel 187 to which is secured one end of a cable188 (Figs. 4 and 10). Th'e'other end of this cable is secured to a pawl190. Thisrpawl is adapted to engage a ratchet wheel 191 that is securedto one end of a shaft 192 (Figs. 9 and l0) which is journaled in thehousing 30. The ratchet wheel isflimited inits movement by a pin 193,lthat engages in a peripheral groove 194 in the wheel. The pin is securedin fa bossI 195 (Fig. 4) integral with the housing 30. A

,coil `spring 196, which is secured lat one end to the pawl 1'90 andwhich is fastenedat its other end to the housing 30, constantly urgesthe pawl downwardly. The pawl 190 is moved upwardly, on downwardrotation of the trigger v185,to rotate the ratchet wheel 191. Its upwardmove- 'ment is limited by a pin 197 which engages in an elongate slot198 formed in the pawl. The pawl 190 is guided in its movement by a pin199.

Shaft 192 has a reelv200 secured to it (Fig. 9). Journaled on a s tud204, Vthat is fastened in housing 30, is a pulley 202. A cable 201,which is fastened at one end to the rod 170, passesover this pulley andis secured at its other end to reel 200, that is secured to shaft 192The cable90, which is fastened at one end to the collar 88, is fastenedat its other end to the reel 200.

When-the trigger is actuated,L then, the shaft 192 is lrotatedtor'o'tate thefreel2M-counterclockwise, as viewed 'the adjustable trippin 163 carried by the bell crank closes the switch 161 in the circuitto the motor 135; but the motor will not' start, because both switch 160and switch 161 must beclosed in vorder for it rto start. As the rodmoves o'n` the right, its collar 175 will engage the leaf 'spring`166and trip switch 165 to close the circuit to the flash lamps 62 and 6 2'(Fig. 2). The position of the collar on shaft will be adjusted initiallyso that the tripping of the flash Ylamps will be synchronized to theopening of the shutter 85.

As soon as the pawl 190 clears the ratchet wheel 191, the spring willact to return the shaft 170 to the left. Spring 92 (Fig, 9) will closethe shutter 85. The exposure will have been completed.

As shaft 170 moves to the left collar 175 will release ash lamp switchl165. Switch 161 will, however, remain closed because the bell crank arm156 is stillon the periphery of the stop plate 155. When the shaft 170has returned fully to the left, stop screw 177 will close the switch160. This ywill start the motor 135, which will drive`the measuringspool 113 and the core in the cassette 115, moving the exposed area awayfrom the exposure aperture, and moving another area of film intoposition for exposure. The movement of the measuring spool 155r andmovement of the ilm will be stopped when the lev'er 1'56reengages thestop plate 155 of the measuring spool. When this occurs, the bell crankwill move clear of the switch trip arm 164, so that the switch 161 willopen and the motor will be stopped. Thus, the motor is stopped and thecycle is completed after a new portion of film has been moved into theexposureposition. Since the stop plate 155, which is secured to themeasuring spool, determines the amount of rotation of the spool, exactlyequal amounts of lm will be fed to exposure position on each cycle ofthe camera regardless of the amount of film wound on the supply spool oron the take- HP SPOOL Roller 112 (Figs. 5, 6 and 12) is carried on aplate 210 that is secured to a pair of parallel arms 212. Arms 212 aremounted to pivot about the axis of the core of cassette 110. A leafspring 214, which is positioned to operate a switch 215, engages in aslot in arm 210. Switch 215 is in the starting circuit ofthe motor 135and must be closed for that motor to start. Spring 214 tends torockplate 210 and roller 112 counterclockwise, as viewed in Figs. 6 and7, about theirpivotal axis. The roller 112 is positioned, however, sothat as the lm F passes from supply cassette to take-up cassette it willengage the roller and swing the roller inwardly, clockwise aboutitspivotal axis, holding switch 215 closed.

When the supply of iilm is exhausted, however, the roller 112 is free torock outwardly under actuation of spring 214. This will open limitswitch 215 and will prevent further operation of the motor until a newsupply of film has been placed in the camera and lm has been led fromthe new supply cassette to the take-up cassette.

A cover 220 is provided to enclose a housing 30. This may be fastened tothe housing detachably in any suitable manner as by clips 221 (Fig. 6).Housing 30 has a forwardly projecting portion 222 which has a forwardlytapered outer surface (Figs. 6 and 7) over which the center section 21of the camera tits with a press t. Center rsection 21 itself increasesin overall dimension `from front to rearl as shown.

7 provided, which is wired in the circuit, as will be described furtherhereinafter, to indicate when the capacitors, which supply the `currentfor the ashlamps, are charged suciently to operate the lamps.

One way in which the camera may be'wired to effect its operation willnow be described.

A plug 230 (Fig. l2), which may be of conventional construction,connects the circuit with a suitable source of electrical current. Thisplug is connected with ground through line 231. Plug 230 is connectedthrough line 232, fuse 233, line 234, main line switch 235, line 236,switch 237, and line 238 with one side of the primary 239 of atransformer 240, It is connected through line 242 with the other side ofthe primary 239. Switch 237 is part of a double pole switch whose otherarm is denoted at 244. The two arms being connected, as indicateddiagrammatically by the dottedV line 245, so that they move together.'Ihese two switches may be connected to a door of the box in which thepower pack for the camera is mounted, so that when the door is openedthe two switches are opened to break the circuit and prevent injury ofthe operator.

Mounted parallel with the primary 239 is a pilot or signal light 246which is connected with line 238 by line 247 and which is connected withline 242 by resistor 248 Vand line 249. The signal light 246 is providedto indi` cate to the operator of the camera that the main line switch isclosed, that the circuit, therefore, is closed.V

Line 238 is connected by line 250 with one side of the motor 135. Themotor is connected on its other side with line 242 by line 251, switch160, line 252, switch 161, line 253, switch 215 and line 255. It will beseen, therefore, that-the three switches 160, 161 and 215 have to beclosed, as already described, in order for the motor 135 to operate.

The secondary of the transformer is denoted at 259. It is connected byline 260 with one side of a split bridge rectier 261. It-is connected byline 262 with the other side of thisrectier. The rectier is connected byline 263 with oneterminal of ash lamp 62. The second terminal of thislamp is connected by lines 264 and 265 with the rectifier, and with theground. 'Ihe triggering wire or coil 266 of the lamp 62 is connected byline 267 with switch 165. This switch is connected by lines 268 and 306with a capacitor 305 which is connected by line 307 and lines 264 and265 with the rectiier and the ground. The triggering coil is alsoAconnected with line 264 by line The rectifier is connected by a line 273with one terminal of the ash lamp 62. Another terminal of this ash lampis connected by line 274, and lines 264 and 265 with the rectifier andwith the ground. The triggering wire or coil 276 of this lamp isconnected by lines 277 and 267 with the switch 165. The triggering wireor coil 276 is connected with line 274 by line 278.

Capacitors 280 and 281 are provided to supply current to the two1amps'62 and 62. Capacitor 280 is connected with line 263 by line 283and is connected with lineV 264 by line 284. Capacitor 281 is connectedwith line 273 by line 285 and is connected with line 264 by line 286.The capacitors are charged when the switches 237 and 244 are closed andmain line switch 235 is closed. Switch 244,V when closed, puts in theresistors 288 and 289, resistor 288 being connected to line 263 by line290, and being connected with line 264 by line 291, switch 244 and line292. Resistor 289 is connected with line 273 by line 293, and isconnected with`1ine 264 by line 294, line 291, switch 244, when closed,and line 292. The resistors balance the circuit to the capacitors, aslong as switch 16S is open, and prevent the discharge of the capacitorsuntil the switch 165 is closed.

The signal lamp 225, which is provided to indicate when the capacitorsare charged suiciently to actuate the triggering coils 266 and 276 ofthe two lamps, and which, therefore, shows that the camera is ready foroperation, is connected with line 273 by line 296, resistor297, and line298. Signal lamp 220 is connected with line 264 by line 299. A resistor300 is also provided that is connected with line 296 by line 301, andthat is connected with line 264 by line 302. Capacitor 305, which ismounted in parallel with the signal lamp 225, energizes the triggeringcoils 266 and 276. It is connected with Yline 268 by the line 306,andwith line 264 by a line 307. A resistor 308 is also provided that isconnected with line 268 by line 309 and with line 264 by line 310. Aresistor 311 is connected with resistor 308 by line 309. It is connectedwith line 273 by line 312. Resistor 308 balances and maintains thecharge in capacitor 305 until switch is closed by operation of collar175 (Fig. 6) of rod or shaft 170.

By providing a split bridge rectifier, the two flash lamps 62, 62 may becharged simultaneously. By providing two lamps, which are disposed atopposite sides of the lens, even distribution of light is attained overthe object to be photographed, reflection is eliminated, and very sharppictures are obtained.

The sensitized material used with this camera is preferably a paper ofsay .0035 inch thickness with the emulsion on the back of the paper sothat the image is projected right through the paper to obtain an erectimage without the use of mirrors or prisms. A picture can be taken withsuchmaterial and with the camera of the present invention every threeseconds; and by moving the camera from one block of meters to another anoperator can cover the bank of meters in a telephone exchange in muchshorter time than has been possible with previous designs of recordingcameras. Moreover, the mechanism of the kpresent camera is simple andwill not readily get out of order.

While-the invention has been described in connection with a particularembodiment thereof, it will be understood that it is capable of furthermodification, and this application is intended to cover any variations,uses, or adaptations of the invention following, in general, theprinciples of the invention and including such departures Yfrom thepresent disclosure'as come within known or customary practice in the artto which the inventionV pertains, and as may be applied to the essentialYfeatures hereinbefore set forth and as fall within the scope of theinvention or the limits of the appended claims.

Having thus described my invention, what I claim is:

l. A photographic camera having an exposure aperture, a shutter movablefrom closed to open position and vice versa, a llashlamp forilluminating the object to be photographed, a rotatable lm supply spoolmounted at one side of said aperture, a rotatable `film take-up spoolmounted at the other side of said aperture, a rotary measuring spoolover which the lm passes in its movement from the supply spool to thetake-up spool, an electric motor for driving both said take-up spool andsaid measuring spool, a manually-operable trigger, means connected tosaid trigger to open said shutter when the trigger is operated, meansconstantly urging said shutter to closed position, a movable lock memberfor locking said measuring roll against rotation, means constantlyurging said lock member into locking position, a rectilinearlyreciprocable control member connected to said trigger to be moved in onedirection upon operation of said trigger, means for constantly urgingthe control member in the opposite direction, means carried by saidcontrol member and projecting laterally therefrom for closing anelectrical circuit to said ashlamp in synchronism with the opening ofsaid shutter after said control member has moved a predetermineddistance in said one direction, means carried by said control member andprojecting laterally therefrom for moving said lock member to releasedposition upon movement of said control member in said one direction,means carried by said control member for actuating said motor onmovement of said control member in said opposite direction, and a switchvincorporated in the ele tfrical 4,cirl'xi't to said motor to stop saidVmotor when" 'said `'measuring r'ollha's made one revolution.k Y r-f l2. A 'photographic camera having an exposure aperture, va shuttermovable from closed to open position'and vice versa, a flashlampforilluminating the Iobject to be photographed, a rotatable 'filmsupplyspool mounted at one side of said aperture, a .rotatablefilm'take-upspool mounted at 'the other side of said aperture, a rotary Ineasiuringspool over which the Vpasses lin its movement from the supply spool tothe take-up spool, an electric motor for driving both said take-up spooland said measuring spool, a manually-operable trigger, means cornnectedto said trigger `to open 0said shutter when the trigger is operated,means rconstantly urgingisaid shutter to closed position, a movable`'lock member,y for locking said measuring roll againstrotation, meansconstantly urging saidloclcmemberwinto locking position, arectilinearly"re'ciprocable control'membe'r'connected to said trigger tobe moyedgrectilineatly .ingonedirection upon operation of said trigger,means for constantly urging the control .member in the oppositedirection, means *carried by said control member f'r'clo'sing anelectrical circuit to said flashlamp'in synchroni'sm with the opening ofsaid shutter Vafter said control memberfhas been kmoved a predetermineddistance in said one direction, means carried by said control member formoving said yl'c'xtk member to. released position upon movement of saidcontrol member in .said one direction, means carried by saidA controlmember for actuating'saidy motor on movement of said control'member insaid'V opposite direction, and a switch incorporated inthe electricalcircuit to said motor and operatively connected to said loj'ck.. memberto stop said motor when "said lock Vmember returns to locking position.

3. A photographic camera having an exposure aperture, a shutter movablefrom closed to open position and vice versa, a ilashlamp forilluminating the object to be photographed, a rotatable film supplyspool mounted at one side of said aperture, a rotatable film take-upspool mounted at the other side of said aperture, a rotary measuringspool over which the film passes in its move ment from the supply spoolto the take-up spool, an electric motor for driving both said take-upspool and said measuring spool, a manually-operable trigger, meansconnected to said trigger to open said shutter when the trigger isoperated, means constantly urging the shutter to closed position, amovable lock member for locking said measuring roll against rotation,means constantly urging said lock member into locking position, areciprocable control member connected to said trigger to be moved in onedirection upon operation of said trigger, means constantly urging saidcontrol member in the opposite direction, means carried by said controlmember for moving said lock member to released position on movement ofsaid control member in said one direction, a normally-open switch in theelectrical circuit to said ashlamp, a pair of normally-open switches inthe electrical circuit to said motor, a trip member carried by saidcontrol member for closing the first switch `on movement of the controlmember a predetermined distance in said one direction, a second tripmember carried by said lock member for closing one of said pair ofswitches on movement of said Vloclt member to released position, a thirdtrip member carried by said control member for cl-osing the other "ofsaid pair of switches on movement of the control member in the oppositedirection, and means for holding said lock member, when released, inreleased position until said measuring roll` has made a completerevolution.

4. A photographic camera having an exposure aperture, a rotatable filmsupply spool mounted at one side of said aperture, a rotatable filmtake-up spool mounted at the other side of said aperture, a rotarymeasuring spool over which the film passes in its movement from supplyspool l0 r to tak'esup spool, said'spools'having'parallel axes',anelctric motor fordrivingl'both rsaid take'up s p'o'l and saidmeasuring spool, a manually operable trigger, a rectilinearlyreciprocable control member, said control member being reciprocable in adirection at right angles to the axes of said spools, means connectingsaid trigger` to said control member to move said control memberrectilinearly in one direction on actuation of said trigger, means'constantly urging said control member in the opposite direction, amovable lock member for locking lsaid measuring roll against rotation,means constantly urging said lock member to locking position, meansconnected to said lcontrol member to release said lock member'onmovement of said control member rectilinearly in saidV one direction,means carried by said control member to start said motor on movement ofsaid control member rectilinearly in the opposite direction, meanspreventing the lock member from returning fully to locked position untilsaid measuring roll has made a complete revolution, and means forstopping said motor when said lock member s in locking position.

5. A photographic camera having an exposurer aperture, a rotatable llmsupply spool mounted at one side of said aperture, va rotatable filmtake-up spool mounted at ythe other side of said aperture, a rotarymeasuring spool over which the film passes in its movement from supplyspool to takeup spool, an electric motor for driving both said take-upspool and said measuring spool, a manually operable trigger, areciprocable control member, means connecting said trigger to saidcontrolmember to move s'aid control member in one direction on actuationof said trigger, means constantly urging said control memberjin theopposite direction, a movable lock member f orvlocling said measuringrollagainst rotation, means constantly urging said lock member tolocking position, means carried by said control member for moving saidlock member to released position on movement of said control member insaid one direction, a pair of normally-open switches in the electricalcircuit to said motor, a trip member carried by said lock member forclosing one of said pair of switches on movement of the lock member toreleased position, a trip member carried by said control member forclosing the other of said pair of switches on movement of said controlmember in the opposite direction, and means carried by said measuringspool for holding said lock member, after release, in released positionuntil said measuring roll has made a complete revolution.

6. A photographic camera having an exposure aperture, a shutter movablefrom closed to open position and vice versa, a ashlamp for illuminatingthe object to be photographed, a tilm supply spool rotatably mounted atone side of said aperture, a film take-up spool rotatably mounted at theother side of said aperture, a rotary measuring spool over which thefilm passes in its movement from the supply spool to the take-up spool,an electric motor for driving both said take-up spool and said measuringspool, a manually-rotatable trigger, a reel fixedly secured to rotatewith said trigger, a rotary ratchet wheel, a reciprocable pawlcooperating with said ratchet wheel and operable to rotate said ratchetwheel in one direction on movement of the pawl in one direction, a cablesecured at one end to said reel and at its opposite end to said pawl tomove said pawl in the direction to rotate said ratchet wheel onactuation of said trigger, a second reel connected to said ratchet wheelto rotate therewith, a cable connecting said second reel to said shutterto open said shutter on actuation of said trigger, a spring constantlyurging said shutter to closed position, a spring constantly urging saidpawl to retracted position, a reciprocable control member, a cableconnecting said second reel to said control member to move said controlmember in one direction on actuation of said trigger, a springconstantly urging said control member in the opposite direction, a lockplate secured to said measuring spool, a rockable lock dog engageablewith said lock plate Yto hold said lock plate against rotation, a springconstantly urging said lock dog into locking position, anormallyopen'switch in the electrical circuit to said ashlamp, a pair ofnormally-open switches inthe electrical circuit to said motor, a tripmember carried by said control member for closing the first switch onmovement of said control member in the said one direction in which it ismoved on actuationof said trigger, a second trip member carried by saidcontrol member for rocking said lock dog out of locking position onmovement of said control member in the said one direction, a third tripmember carried by said lock dog for closing one of said pair of switcheson move- CJI ment of said lock dog to released position, a fourth tripmember carried by said control member for closing the other of said pairof switches on return of said control member to its starting positionunder actuation of its spring, 'and' a spring for rotating saidmeasuring spool lother side of said aperture, a rotary measuring spoolover which the lm passes in its movement from supply spool to take-upspool, said spools having parallel axes, an electric motor for drivingboth said take-up spool and said measuring spool, a manually operabletrigger, a rectilinearly reciprocable control'member, said controlmember `being reciprocable in a direction at right angles to the axes ofsaid spools, means connecting said trigger to said control member tomove said control member in one direction on actuation of said trigger,means constantly urging said control member in the. opposite direction,a stop plate secured to said measuring spool, a rockable lock dog e11-gageable with said stop plate to hold said lock plate against rotation,said ylock dog being rockable about an axis parallel to the of saidmeasuring spool, means constantly urging said lock dog into lockingposition, a trip member carried by and projecting laterally from saidcontrol member for rocking said lock dog out of locking position onmovement of said control member in said one direction, means carried bysaid control Vmember for starting said motor on further movement of saidcontrol member, a spring for rotating said measuring spool slightly onrelease of said lock dog, said stop plate being shaped to hold said lockdog in released position, after said slight rotation, until saidmeasuring spool has completed a full revolution, and means operated bysaid lock dog on its return to locking position to stop said motor.

References Cited in the le of this patent UNITED STATES PATENTS Re.23,606 Bornemann et al. Dec. 30, 1952 481,343 Bristol Aug. 23, 1892675,781 MacDonald June 4, 1901 975,277 Pond Nov. 8, 1910 1,448,526Dobbin Mar. 13, 1923 1,720,224 Lessler et al July 9, 1929 1,864,768 jSeeling lune 28, 1932 1,955,300 Kurnick Apr. 17, 1934 1,963,095 Petit etal June 19, 1934 2,129,001 Goehner Sept. 6, 1938 Y2,482,107 HackethornSept. 20, 1949 2,608,920 Smith Sept. 2, 1952 2,679,790 Clark June 1,1954

